Originally Posted by bdd1469
In all my years messing with small blocks I have learned many things. One of the first things I learned is the long stroke in a 400 kills its rev potential.
You can talk about bigger heads and more ci all day but a 377 will rev so much quicker and higher with good parts it is no comparison imo.
Have you ever built a 400 that revved like a 350? No, it wont spin because of the long stroke...... dont give a fukc what head is on it. It's the rotating assembly that slows it not the amount of air air the heads flow.
We have built 400s and 377s with the best money can buy and the 377 will stomp a 406 every time in the upper rpms. A 377 with cola crank and oliver rods will spin to the moon,happily. A 400 with same parts wont go past 6500-7000 from what we have built, and takes all day to get there.
Sounds like you need a different builder.....my 4.1 stroke engine has no issues getting to 7500+ quickly.